7(4-7)=9y+20

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Solution for 7(4-7)=9y+20 equation:


Simplifying
7(4 + -7) = 9y + 20

Combine like terms: 4 + -7 = -3
7(-3) = 9y + 20

Multiply 7 * -3
-21 = 9y + 20

Reorder the terms:
-21 = 20 + 9y

Solving
-21 = 20 + 9y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-9y' to each side of the equation.
-21 + -9y = 20 + 9y + -9y

Combine like terms: 9y + -9y = 0
-21 + -9y = 20 + 0
-21 + -9y = 20

Add '21' to each side of the equation.
-21 + 21 + -9y = 20 + 21

Combine like terms: -21 + 21 = 0
0 + -9y = 20 + 21
-9y = 20 + 21

Combine like terms: 20 + 21 = 41
-9y = 41

Divide each side by '-9'.
y = -4.555555556

Simplifying
y = -4.555555556

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